Muscle development device



FIG. 1 is a left side elevational view of a muscle development device showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front and side perspective view of the muscle development device. 

The design for a muscle development device, as shown and described. 